Patents by Inventor Ralph Dieter

Ralph Dieter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins
    Publication number: 20030149199
    Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.
    Type: Application
    Filed: June 24, 2002
    Publication date: August 7, 2003
    Inventors: Jorg Schottek, Markus Oberhoff, Carsten Bingel, David Fischer, Horst Weiss, Andreas Winter, Volker Fraaije, Ralph-Dieter Maier, Wolfgang Bidell, Nicola Paczkowski, Jurgen Suhm, Roland Kratzer
  • Process and device for the production of epitaxial layers
    Patent number: 6013130
    Abstract: Layers of compound semiconductor 60 are grown epitaxially on a substrate 40. One or more components 24 are removed from a target 14 by a supply of energy 18, and reacted with gas surrounding the target. The gas stream conveys the components through a nozzle 34 to achieve a uniform layer on the substrate.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: January 11, 2000
    Assignee: Deutsche Forschungsanstalt Fuer Luft- und Raumfahrt e.V.
    Inventors: Ralph Dieter, Hans Opower, Heinrich Weyer